CIS 260 ReadWithResources.java

Code

/*
    ReadWithResources.java
    David Klick
    2018-01-08
    CIS 260
    
    This program uses Java's try-with resources to automatically take
    care of closing a file when done processing or if an error occurs.
*/
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

public class ReadWithResources {
    public static void main(String[] args) {
        String filename = "int1to100.txt";
        List<String> contents = new ArrayList<>();
        String lineIn;

        try (BufferedReader br = new BufferedReader(new FileReader(filename))) {
            while ((lineIn = br.readLine())!= null) contents.add(lineIn);
        } catch (IOException e) {
            System.err.printf("Error reading file %s%n", filename);
            System.exit(1);
        }
        
        for (String line : contents) System.out.println(line);
    }
}